OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:3e:4d:7f:48:29:03
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:53:03:e5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:0a:24:9a:1a:2f:dd
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:02:51:dc:8f:ef:4b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:53:03:e5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
